HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 523
HD6417320
Manufacturer Part Number
HD6417320
Description
Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417320.pdf
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11.4
The CPG has the following registers. Refer to section 37, List of Registers, for more details on the
addresses and access size of these registers.
• Frequency control register (FRQCR)
• USBH/USBF clock control register (UCLKCR)
11.4.1
The frequency control register (FRQCR) is a 16-bit readable/writable register used to specify
whether a clock is output from the CKIO pin, the frequency multiplication ratio of PLL circuit 1,
and the frequency division ratio of the internal clock and the peripheral clock.
Only word access can be used on the FRQCR register. FRQCR is initialized by a power-on reset,
but not initialized by a power-on reset at the WDT overflow. FRQCR retains its value in a manual
reset and in standby mode.
The write values to bits 14, 13, 11, 10, 7, 6, and 3 should always be 0.
Bit
15
14, 13
Bit Name
PLL2EN
Register Descriptions
Frequency Control Register (FRQCR)
Initial
Value
0
All 0
R/W
R/W
R
Description
PLL2 Enable
PLL2EN specifies whether make the PLL circuit 2 ON in
clock operating mode 7.
PLL circuit 2 is ON in clock operating modes other than
mode 7 regardless of the PLL2EN setting.
0: PLL circuit 2 is OFF
1: PLL circuit 2 is ON
Reserved
These bits are always read as 0. The write value should
always be 0.
Rev. 3.00 Jan. 18, 2008 Page 461 of 1458
Section 11
Clock Pulse Generator (CPG)
REJ09B0033-0300
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